impetus

きっかけ、推進力

物事を始めたり、その進展を速めたりするもの。

やさしい英語で： Something that starts a process or makes it develop more quickly.

• The funding gave our project fresh impetus.
• Public concern provided the impetus for change.
• What gave the campaign its initial impetus?

使い方： impetus for something (The report provided the impetus for reform.); give impetus to something (The grant gave impetus to local research.)

類義語： stimulus, driving force, push

よく使う表現： give impetus, new impetus, impetus for change, provide impetus

勢い、推進力

動いている物をそのまま動かし続ける力やエネルギー。

やさしい英語で： The force or energy that keeps a moving object going.

• The ball lost its impetus on the grass.
• The wheel continued turning under its original impetus.
• A push gave the cart enough impetus to move uphill.

類義語： momentum

よく使う表現： forward impetus, initial impetus